
'The symposium ... was called at the request of the ECE Committee on Agricultural Problems ... organized jointly by the Secretariats of the FAO and ECE ... 14 to 18 December 1970' - Introduction. - Text in English, French and Russian.
Symposium on Economic and Agronomic Aspects of New Forms of Fertilizers and Techniques in their Application = Colloque sur les Aspects économiques et agronomiques des nouvelles Formes d'Engrais et les. Published by Food and Agriculture Organization in 1971. Publication and catalogue information, links to buy online and reader comments.